問題描述

我有以下 Firebase 數(shù)據(jù)庫 JSON 數(shù)據(jù)結(jié)構(gòu):

I have the following Firebase Database JSON data structure:

{
  "Post List" : {
    "-KUlvg8mCEGfY5ZSKCou" : {
      "addedByUser" : "7llQbPdy2NV7aO337h7ap0qLOhC3",
      "content" : "Post1",
      "cost" : "$450",
      "duration" : "Daily",
      "latitude" : "25.0879721592719",
      "longitude" : "55.1487715855458",
      "number" : "01234567890",
      "timestamp" : "Posted on: Sun 23 Oct"
    }
  },
  "Post Locations" : {
    "-KUlvg8mCEGfY5ZSKCou" : {
      ".priority" : "thrnwznh58",
      "g" : "thrnwznh58",
      "l" : [ 25.0879721592719, 55.1487715855458 ]
    }
  },
  "User Locations" : {
    "7llQbPdy2NV7aO337h7ap0qLOhC3" : {
      ".priority" : "thrnwypqu9",
      "g" : "thrnwypqu9",
      "l" : [ 25.0829547120321, 55.1505315855337 ]
    }
  }
}

我希望有一個 GeoFire 查詢，它將返回 1KM 半徑內(nèi)的所有鍵 [FIRAutoID's]，例如的用戶位置"這些帖子是靜態(tài)的，一旦設(shè)置了用戶位置，它也將被修復(fù).從半徑查詢結(jié)果中，我期望返回-KUlvg8mCEGfY5ZSKCou"，這樣我就可以參考帖子詳細(xì)信息.希望這是有道理的.非常感謝，D.無法在網(wǎng)上找到很多關(guān)于 GeoFire 的信息...看起來它仍處于初始階段?...

I am looking to have a GeoFire query which will return all the keys [FIRAutoID's] within a radius of 1KM, for e.g. of "User Locations" these Posts are static and once the user location is set it will also be fixed. From the radius query result I am expecting to return "-KUlvg8mCEGfY5ZSKCou" so I can then make a reference the Post Details. Hope this makes sense. Many thanks, D. Cant find much online about GeoFire... looks like its still in the initial stages?...

推薦答案

想通了

func geoFireQuery() {

        let circleQuery = geoFire.query(at: self.myLocation, withRadius: 0.5)

        _ = circleQuery!.observe(.keyEntered, with: { (key: String?, location: CLLocation?) in

        print (key!)

    })

    circleQuery?.observeReady({
        print("All initial data has been loaded and events have been fired!")

    })

}

這似乎給了我我需要的東西.現(xiàn)在將這些鍵引用到 FBDB 的另一部分.:)

this seems to be giving me what I need. Now to reference those keys to the other part of the FBDB. :)

這篇關(guān)于在 Swift 中從 Radius 中的 GeoFire 檢索密鑰的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！